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    vs.      
Wataru Okada leads the series against Masayasu Tanahashi, 2-0.

event round table player one result player two
Grand Prix Yamagata 2006544Okada, Wataru (1681)Won 2-0Tanahashi, Masayasu (1611)
Grand Prix Kyoto 2007771Okada, Wataru (1664)Won 2-0Tanahashi, Masayasu (1593)